3a+b+a-5=

Solution for 3a+b+a-5= equation:

Simplifying
3a + b + a + -5 = 0

Reorder the terms:
-5 + 3a + a + b = 0

Combine like terms: 3a + a = 4a
-5 + 4a + b = 0

Solving
-5 + 4a + b = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 4a + 5 + b = 0 + 5

Reorder the terms:
-5 + 5 + 4a + b = 0 + 5

Combine like terms: -5 + 5 = 0
0 + 4a + b = 0 + 5
4a + b = 0 + 5

Combine like terms: 0 + 5 = 5
4a + b = 5

Add '-1b' to each side of the equation.
4a + b + -1b = 5 + -1b

Combine like terms: b + -1b = 0
4a + 0 = 5 + -1b
4a = 5 + -1b

Divide each side by '4'.
a = 1.25 + -0.25b

Simplifying
a = 1.25 + -0.25b